<html>

<head>
  <script src="../../common/jquery.min.js"></script>
</head>

<body>
  <p id="aa"></p>
  <p id="bb">Robin Li</p>
  <p id="cc">Jobs</p>
  <script src="hello.js"></script>

  <script>
    Date.prototype.format = function (fmt) {
      var o = {
        "y+": this.getFullYear, //年
        "M+": this.getMonth() + 1, //月份
        "d+": this.getDate(), //日
        "h+": this.getHours(), //小时
        "m+": this.getMinutes(), //分
        "s+": this.getSeconds() //秒
      };
      if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
      for (var k in o)
        if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
      return fmt;
    }
    setInterval("document.getElementById('dateTime').innerHTML = (new Date()).format('yyyy-MM-dd hh:mm:ss');", 1000);
  </script>
  <div id="dateTime"></div>
</body>

</html>